Portable pulling-machine.



C. H. OVERLY & 0. A. THOMPSON. PORTABLE PULLING MACHINE.

APPLICATION man JAN-3.1916,

1,21 3,242, Patented Jan. 23, 1917.

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PORTABLE PULLING MACHINE.

APPLICATION man mms. I916.

Patented Jan. 23, 1917.

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C. H. OVERLY & O. A. THOMPSON. PORTABLE PULLING MACHINE n. W ml 4 mm Mhm Y5 mm LP m n m 1 Z P 2m 0 APPLICATION FILED JAN-3| 19H).

UNITED STATES PATENT omen" CHARLES HERMAN OVERLY AND OWEN ALONZOTHOMPSON, OF INDEPENDENCE,

- KANSAS.

PORTABLE PULLING-MACHINE.

Specification of Letters Patent.

Patented Jan. 23, 1917.

To all whom it may concern Be it known that we, CHARLES H. OVERLY andOWEN A. THOMPSON, citizens of the United States of America, residing atInclependence, in the county of Montgomery and State of Kansas, haveinvented certain new and useful Improvements in PortablePulling-Machines,'of which the following is a specification.

The present invention relates to improvements in portable pullingmachines especially adapted for use in connection with oil wellderricks.

The primary object of the invention is to provide a simple, compact andeasily operated machine of this character which may be installed withfacility for use, and op erated in a simple manner, and which may bedismantled and packed for transportation with facility and despatch.

With these ends in view the invention consists in certain novelcombinations and arrangements in connection with a telescoping mast, andmeans for extending said telescoping mast; a detachable two-wheeledtruck for transporting the device, and in connections between said truckand mast, and further in details of construction and arrangements ofparts as will be hereinafter more fully pointed out and claimed.

in the accompanying drawings we have illustrated one complete example,of the physical embodiment of our invention constructed according to thebest mode we have so far devised for the practical application of theprinciples of the invention.

Figure 1 is a view in elevation showing the machine assembled for use,the lift line and other parts being omitted for convenience inillustration; Fig. 2 is an enlarged view of the top of the mast as seenat right angles to Fig. 1, showing the crown pulley and its guide yokeas well as the lift line on the pulley. Fig. 3 is a detail view show ingthe upper end of the lower mast section and the lower end of the uppermast section, and the elevating connections therefor; Fig. 4 is a bottomplan view of the lower portion of the machine showing. its tractionwheels carried thereby; Fig. 5 is a side elevation of the machine readyfor transportation; Fig. 6 is a side elevation of the same machine afterthe tongue has been. uncoupled from the mast showing the lower end ofthe mast as overbalanced and in initial position before being raised toupright or perpendicular position; Fig. 7 is an enlarged detailsectional view showing a cross beam and bolster, and connectiontherebetween; Fig. 8 is a detail view,'partly in section, showing thelatch for holding the mast extended.

In the preferred embodiment of our invention, as illustrated in thedrawings, the base of the mast is made up of a frame rectangular inshape and comprising the two side beams 11, the lowerbeam 2 and theupper cross beam 3. These four members are rigidly joined together, andthe two side beams support the reel shaft 4: which passes transverselythrough the frame and has bearing blocks 55. These blocks 55 areslidable blocks, and they are incased in the brackets 66 which arebolted at one edge of the side beams 1+1. The reel shaft which supportsthe reel 7 is thus suspended in the elongated brackets 6, and the slideblocks ,5 are directly supported by the links 8 and springs 9.Theselinks are connected to the crank bar 10 which is journaled at 1111on the base beam 2, and this crank bar forms a portion of the device foroper ating the brake bands 124512 in connection with the reel on itsshaft 4;: As before stated, this shaft 4: is supported in slidableblocks which form its bearings, and inasmuch as the reel and brakemechanism are clearly set forth in our Patent Number 1,110,004,September 8,1914, it is unnecessary to describe the details ofconstruction -of the reel andbrake mechanism;

The portable machine is supported upon traction wheels 1414, which areprovided with the usual axle 15 and" bolster 16, to form atwo-wheel"detachable truck. The truck is provided with a tongue 17 to which isattached the double tree 18, and the joint between the frame of thepulling machine and the truck is formed by a hollow tube or pipe 18which is bolted at 19 to the cross beam 3 of the frame, and this pipe isseated in a recess 20in the'upp'er face of the bolster 16. By thisconstruct'ion it will be seen that the pipe 18 forms a fulcrum forpivotal movement between the truck and the frame, so that the frame maybe swung upon the bolster as a center. The truck is further connected tothe frame by means of a pairof sidebars 2122. These bars are formed witheyes 23 which are passed over the outstandingends of the reel shaft 4:,as

clearly shown in Fig. 4, and the other ends of the bars 21-22 arepivoted in side brackets 24 which are bolted to the bolster 16 betweenthe wheels. By this construction the truck and frame are braced and heldrigidly when the pulling machine is in position to be transported, andthe side bars render the connection stable and rigid and prevent thedisplacement of parts when the machine is being hauled over the ground.

The mast of the pulling machine is oomposed of two sections of pipe as25 and 26, the former being the larger pipe and the latter being adaptedto telescope within pipe 25 when the parts are dismantled fortransportation. The main section or pipe 25 is rigidly secured in thebase of the frame, and extends upwardly through the frame and betweenthe two timbers which form the cross beam 3. These timbers are boltedtogether as at 27, and it will be seen that the mast section 25 isrigidly held in its frame between the base beam 2 and the correspondingcross beam 3. The base beam is provided with a collar or sleeve 28 towhich an eye bolt 29 is attached, and in Figs. 5 and 6 it will be seenthat the slotted extension 30 of the tongue 17, is adapted to fit overthe eye bolt 29 and by means of a locking ring 31 the tongue 17 and themast section 25 are locked together. In the position shown in Fig. 5,the parts are about nearly balanced on the axle 15, and the weight ofthe mast and frame is so distributed that when the tongue and mastsection 25 are uncoupled, the frame predominates in weight so that theframe end of the device swings downwardly and raises the mast end of thedevice. By this construction and arrangement of parts it will be seenthat the device may be placed in initial position for erectionpreparatory to operation of pulling, as soon as the mast is uncoupledfrom the tongue 17 thus saving time and labor in the erection of thepulling machine. In the position of Fig. 5, where the device is picturedready for transportation, horses may be attached to the double tree 18,or the swingle tree 32 which is located at the end of the mast extension26, may be utilized.

The mast section or extension 26 telescopes within the mast section 25when the parts are in inoperative position and ready for transportation.A pin 23 secured in the mast extension 26 is adapted to seat in a notch34 provided in the collar 35 on the mast section 25, and these featureshold the telescoping parts against movement or displacement when theyare telescoped, and the fixed collar 36 on the extension 26 engagesagainst the upper edge of the collar 35 and assists in holding the partsin proper position. 7 7

The extension mast is raised to its extended position by means of a ropeor cord 37 which is attached at 38 near the lower end of the mastextension, and the cord passes upwardly through the upper open end ofthe mast 25 and over a pulley 39 which is ]our naled in a yoke 40projecting upwardly from the collar 35 on the upper end of the mast 25.In Fig. 1 it will be seen that the cord 37 is extended downwardly andits end is wrapped about a reel 41 which is detachably retained on oneend of the reel shaft 4. By means of this reel 41 and the handle 42, thecord or rope 37 may be wound upon the reel 41 by turning the crankhandle 42, with the result that the mast extension 26 is lifted from itsretracted position in Fig. 5, to its extended position in Fig. 1. Themast extension, of course, may be lowered by per mitting the cord 37 tounwind on the reel 41, and the mast extension 26 is thus lowered untilthe pin 33 seats in the notch 34 and the cord 36 rests upon the collar35.

For holding the mast extension in extended position, we provide asimple, but very effective latch device, as illustrated in Fig. 8. Thisdevice comprises an elongated transversely arranged latch 43 which isarranged to pass through a slot 44 provided in the upper end of the mastsection, and also in the side of the reinforcing collar 28.Diametrically opposite the slot 44 a second slot 45 is provided for theend of the latch 43, and when in the position shown in Fig. 8, it willbe seen that the latch 43 extends transversely across the reinforced endof the mast section, and provides a supporting bar for the mastextension 26 to rest upon. The latch is pivoted at 46 in a bracket 47which is bolted at 48 to the reinforcing collar 28, and the latch isadapted to swing upon its pivotal center 46 so that the free end of thelatch may be entirely withdrawn through the slot .44 when it is desiredto retract the mast extension. The latch 43 is operated through themedium of a pull rod 49 which is pivoted to the latch at 50 and extendsthrough the cross beam 3 and its handle 51 is in convenient position foraccess by the operator of the pulling machine. A' spring 52 locatedbetween a stop 53 on the rod 49 and the cross beam 3, tends at all timesto urge the pull rod 49 away from the beam 3, so that when the pullingmachine is in erect position, and the mast extension is extended, thelatch is held in its horizontal position as shown in Fig. 8. In thismanner the latch is positively held at all times in operative position,and can only be rendered inoperative by a direct and positive pull onthe pull rod 49. When it is desired to retract the mast extension 26,the extension is first lifted by means of the reel 41 and crank handle42, sufficiently so that the latch 43 may be swung through the slot 44,and then the extension may be lowered and permitted to telescope withinthe mast 25,

The usual crown pulley 54: is provided at the end of the mast extensionfor the lift line 55 (see Fig. 2), and a guide yoke 56 is secured to thecollar 57 just below the crown pulley. This guide yoke is of circularformation and extends around the crown pulley for a distance, and isprovided to prevent chafing or wear of the lift line. Suitable guy ropesor braces 5757 are employed in connection with the mast extension, andother guy ropes 58 are employed in connection with the mast section 25,by means of which the pulling device may be rigidly held in erectposition.

From the above description taken in connection with our drawings, it isevident that we have simplified the construction of portable pullingmachines in the several enumerated particulars, and have provided adevice which is capable of compact arrangement for transportation, andwhich is capable of erection with facility and despatch/ By the simplebut effective combinations of parts, the device may be transported tothe place of usage, may be quickly erected, and may be operated withfacility and efficiency.

YVhat we claim is:

1. The combination in a pulling machine Copies of this patent may beobtained for five cents each, by addressing the to a portion of the baseframe at the oppo-' side side of the bolster as described.

2. The combination with a two wheel truck and its bolster, of a mast anda base frame seated on the bolster as a fulcrum, a tongue detachablyconnecting the truck and mast, the weight of the base frame being suchas to overbalance the mast end of the frame when the tongue is uncoupledfrom the mast, and a pair of side bars pivoted on a part of the truckand detachably connected to the base frame at the opposite side of thebolster.

In testimony whereof we affix our signatures.

CHARLES HERMAN OVERLY. OWEN ALONZO THOMPSON.

Commissioner of Patents.

Washington, D. 0.

